Principle and performance of throttle orifice flowmeter

1. Overview of Orifice FlowmeterThe standard orifice plate is a differential pressure generating device for measuring flow. It can be used with various differential pressure gauges or differential pressure transmitters to measure the flow of various fluids in the pipeline. Throttle orifice flow meter throttling device includes annulus orifice, nozzle and so on.Throttle orifice flowmeter throttling device is used with differential pressure transmitter to measure the flow of liquid, steam and gas. Throttle orifice flowmeter is widely used in petroleum, chemical, metallurgy, electric power, light industry and other departments.2. Performance of orifice flowmeterThe fluid filled with the pipeline, when they flow through the throttling device in the pipeline, the stream will form a local contraction at the throttling part of the throttling device, so that the flow velocity will increase and the static pressure will be low. The pressure drop, that is, the pressure difference, the greater the flow of the medium, the greater the pressure difference generated before and after the throttle, so the throttle orifice flowmeter can measure the size of the fluid flow by measuring the pressure difference. This measurement method is based on the law of conservation of energy and the law of continuity of flow.The intelligent throttling device (throttle orifice flowmeter) is a new generation flowmeter that integrates flow, temperature, and pressure detection functions, and can automatically compensate for temperature and pressure. The throttling orifice flowmeter uses advanced microcomputer technology. With the new micro-power consumption technology, it has strong functions, compact structure, simple operation and convenient use.Third, the characteristics of orifice flowmeterThe structure of the throttling device of the throttling orifice flowmeter is easy to replicate, simple, firm, stable and reliable in performance, long in service life, and low in price.The calculation of the orifice plate adopts international standards and processing.The throttle orifice flowmeter has a wide range of applications, all single-phase flows can be measured, and some mixed-phase flows can also be used.The standard throttling device can be put into use without real flow calibration.The integrated throttling orifice flowmeter is easier to install, no pressure pipe is needed, and it can be directly connected to a differential pressure transmitter and a pressure transmitter.Features of Intelligent Throttle Orifice Flowmeter:Use imported single crystal silicon intelligent differential pressure sensor.High precision and perfect self-diagnosis function.Intelligent Throttle Orifice Flowmeter The range of intelligent orifice flowmeter can be adjusted by self-programming.The intelligent throttling orifice flowmeter can display cumulative flow, instantaneous flow, pressure, and temperature at the same time.In addition to the online and dynamic full compensation function, the intelligent throttle orifice flowmeter also has self-diagnosis and self-set range.Equipped with a variety of communication interfaces.High stability.The measuring range is wide, greater than 10:1.Technical indicators of intelligent throttle orifice flowmeter.High precision: ±0.075%.High stability: better than 0.1%FS/year.High static pressure: 40MPa.No adjustment is required for 5 years of continuous work.The influence of temperature and static pressure can be ignored.

Resistant to high overvoltage.


Post time: 21-09-21